While recommended diaries is a good way to keep good ideas above water for about a day, great ideas for projects like the letter writing "Shame on You" project should be posted to some sort of Kos web page that acts as a "project board." If a project or a call to action gets recommended, I think it should get memorialized in a clearinghouse page for this type of stuff so that those who may miss (or forget about) a good project idea can always go to one place to see what needs to be done.
Front page reminders of the project page and notices of updates would be a good thing too.
It's crunch time, so diaries will be coming fast and furious during a time when great project ideas need more airtime. We need a project board!
Just a brainstorm.